(CNN) -- Tropical Cyclone Tomas battered Fiji's northern islands on Monday evening with gusts of up to 275 km/h (170 mph) and heavy rain, but weather officials had not received immediate reports of damage.

The Category 4 storm is the second-most destructive on a five-point scale. As it heads southeast, it is expected to sideswipe the main island, Viti Levu. The South Pacific nation's capital, Suva, is on that island.

"The closest it will come is 200 km (124 miles) to the east of Suva," said Alipate Waqaicelua, forecaster for the Nadi Tropical Cyclone Center.